Boring-machine.



Patented Feb. I8, |902.

No. V693.743.

R. W. RUWLEY.

somma MAcHmE.

(Applieation led May 17, 1901.)

2 Sheets-Sheet I.

(No Model.)

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no. 693,743. Patented Feb. la, |902.

n. w. nuwLEY.

BORING MACHINE.

(Application lad May 17, 1901.)

2 Sheets--Sheei 2.

(No Model.)

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UNTTnn STnTns PATENT OFFICE.

RAYMOND lV. ROVVLEY, OF Sl-l. LOUIS, MISSOURI.

BomNG-MAol-HNE.

SPECIFICATION forming part of Letters Patent N o. 693,743, datedFebruary 18, 1902.

Application filed May 17, 1901. Serial No. 60,652. (No model.)

To @ZZ whom it may concern/ Be it known that I, RAYMOND W. ROWLEY, ofthe city of St. Louis, State of Missouri, have invented certain new anduseful Improvements in Boring-Machines, of which the following is afull, clear, and exact description, reference being had to theaccompanying drawings, forming a part hereof.

My invention relates to boring-machines; and it consists oi' the novelconstruction, combination, and arrangement ot' parts herein atter shown,described, and claimed.

The object of my invention is to provide an improved boring-machineespecially adapted for boring Wood for the special use of electricalworkers in wiring buildings where it is desired to bore a plurality ofholes through opposite joists for the passage of electric cables, wires,&c.

Afurther object is to provide a machine of this class which withpractically the amount of labor exerted in using the common brace andbit will bore four holes in two adjacent joists (two holes in eachjoist) as against one with the ordinary brace and bit in the hands of aworkman.

A further object is to provide a machine of this class which in place ofboring at an angle relative to the surface of the joist (as mustgenerally be done with a brace and bit, owing to the slight spacebetween the joists) bores straight through, whereby a series of holescan be bored in a nearly straight line through a plurality of joists andallow the wires to be drawn through several joists at the same timeinstead of having to draw them through each joist separately, as'hasheretofore been the case when the holes were bored at an angle or out ofalinement.

A further object is to provide improved clamping devices for temporarilyholding the boring-machine in position between two adjacent joists ortimbers.

1n the drawings, Figure 1 is a sectional side elevation of the machine,taken on the line 1 1 of Fig. 2 and looking in the direction indicatedby the arrow a. Fig. 2 is a sectional end elevation with parts brokenaway, taken on the line 2 2 of Fig. 1 and lookingin the directionindicated by the arrow b. Fig. 3 is an inverted sectional planviewlooking at the bottom of the machine shown in Fig. 1. Fig.

4 is a sectional plan View taken on the line 4 4 of Fig. 1 looking frombelow. Fig. 5 is a sectional plan View on the line 5 5 of Fig. 1 lookingfrom below.

The machine in the present instance is provided with a rectangular boxor casing 6, in which are mounted to revolve a plurality of parallelboring-bars, which latter are constructed in the form of four parallelrevoluble tubes 7 and their contained feed-screws S and suitableconnections. The said feedscrews are each fitted at one end with asuitable boring-bit 9 and at the opposite end with a head or enlargement10, which is splined to its' tube 7 by means of opposite grooves 11formed in said tube and extending almost the entire length thereof. Saidfeed-screws are revolved within an internally-threaded collar l2, iixedto the end of the casing by means of suitable screws or rivets, (seeFig. 1,) and said collar projects inwardly a short distance and one endof its tube 7 is mounted thereon, and there is also a bearing for thesame tube in the opposite end of said casing, and longitudinal movementin one direction is prevented by a collar 13, fixed to said tube andbearing against the inner surface of said casing. Longitudinal movementof said tube in the opposite direction is prevented by contactI of itsend with the end of the casing. The mounting of each tube issubstantially the same as that above described, except that the head andtail ends are placed alternately, as shown in Fig. 1.

14 indicates the driving-shaft, upon the outer end of which is mounted asuitable hand-crank 15, and which shaft extends within the casing andcarries a gear-wheel 16, which meshes with a combined bevel and spurwheel 17, which forms what I may term the master-wheel. Saidmaster-wheel 17 is mounted upon a suitable stud or short shaft extendingbetween two transverse frameplates 18 19, and said master-wheel islocated midway between the upper pair of the revoluble tubes 7, andiixed upon each of said tubes is a gear-wheel 20. 1t will be seen thattwo of said gear-wheels 2O mesh directly with the teeth of the saidmasterwheel 17, and these wheels in turn mesh with wheels directlybeneath them. I desire to state in this connection that any of the knownmethods IOC) of splining may be adopted instead of that which I 'hereshow for connecting the said tubes 7 to the feed-screws S, and Itherefore do notlimit myself to the construction herein shown.

I will now describe the construction of the improved clamping devicesfor anchoring the machine between two adjacent joists.

The clamping devices in the present instance consist of oppositeclamping-plates 2l, having suitable teeth or claws 22 for engaging thejoists or timbers and suitable mechanism for simultaneously urging saidclamping-plates outwardly when the machine is to be anchored to thejoists and means for simultaneously retracting said plates in displacingthe machine.

Mounted to slide in suitable bearings 23 in the top of the casing 6 is apair of parallel toothed racks 24, and another pair of said toothedracks 24 is mounted in the same manner upon the bottom of said casing,and the outer end of one rack of each pair of racks is pivotallyconnected to an'adjacent clampingplate 21 by means of a perforated ear25. Motion is imparted to said l toothed racks by means of pinions 26,which are fixed upon a transverse shaft 27, suitably mounted in thecasing 6 and provided at its outer end with a handle 28. A ratchet-wheel29 is xed upon said shaft 27 within the said casing and engaged by apawl 30, pivoted at 3l to the casing adjacent said ratchet-wheel. Thedisengagement of the pawl is effected bya lug 32, carried by anadditional transverse shaft 33, the outer end of which is provided witha suitable handle 34.

The operation is as follows: The machine is to be placed between twoadjacent joists in which holes are to be bored and secured in positionby means of the clamping-plates 2l, and their teeth 22 being forciblyurged into contact with said joists by the movement of the rack-bars 24,which is occasioned by rotating the sha'ft 27 by means of its handle 28,and when the machine has thus been secured in position the rack-barswill be locked by means of the pawl 30 engaging the ratchetwheel 29. Itwill be observed that all of the rack-bars are moved simultaneously,thereby imparting a uniform movement to all parts of the saidclamping-plates. The machine is now ready to bore, and this may beaccomplished by turning the crank 15 toward the right in Fig. l, therebyimparting motion simultaneously to all four of the tubes 7 in a i properdirection to bore with right-hand bits carried by all four of thefeed-screws 8. The revoluble movement of said tubes 7 causes thefeed-screws 8 also to revolve, and their threads engaging theirrespective fixed collars 12 causes said screws to be simultaneously fedoutwardly, thereby forcing said bits tracted, thereby disengaging saidclampingi plates and their teeth 22 from the timbers.

It is to be noted that I do not limit myself to the identical form ofboring-'bits herein shown, as it is evident that any known form ofdrill, either for metal or wood, may be substituted without involvingthe metaphysical function commonly known as invention I claiml.Aboring-machineconstructedwithaplurality of drill-holders projecting inopposite directions, means for simultaneously revolving saiddrill-holders, and means for 'clamping the machine between two adjacenttimbers.

2. Aboring-machineconstructed withaplurality of drill-holders, meanswhereby one or more of said drill-holders are simultaneously fedoutwardly in opposite directions, and means for simultaneously revolvingand feeding outwardly said drill-holders,substantially as specified. l

3. A boring-machine constructed with a plurality of drill-holders, meanswhereby one or more of said drill-holders are simultaneously fedoutwardly in opposite directions, means for simultaneously revolving andfeeding outwardly said drill holders, and means for clamping the machinebetween two adjacent timbers.

4. Aboring-machine constructed withaplurality of drill-holders, meanswhereby one or more of said drill-holders are simultaneously fedoutwardly in opposite directions, means for simultaneously revolving andfeeding outwardly said drill-holders, means for clamping the machinebetween -two adjacent timbers,

.and means for locking the clamping devices after the machine has beenclamped in position.

5. A boring-machine constructed with aplurality of drill-holders, meanswhereby one or more of said drill-holders are simultaneously fedoutwardly in opposite directions, means for simultaneously revolving andfeeding outwardly said drill-holders, means for clamping the machinebetween two adjacent timbers, means for locking the clamping devicesafter the machine has been clamped in position, and means for releasingthe locking devices.

In testimony whereof I aiiiX my signature in presence of two witnesses.

RAYMOND W. ROWLEY. Witnesses:

JOHN C. HIGDON, ALFRED A. EIcKs.

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